Verizon Wireless plans to expand its 4G LTE coverage tomorrow to 33 new U.S. markets. The carrier will then boast 337 LTE markets, which places it ahead of competitors by a wide margin, and it hopes to reach 400 total by the end of 2012. Verizon also announced it is broadening coverage in 32 existing markets.

“With more markets than all other U.S. wireless providers combined, our customers are the first to learn of the great advantages of the Verizon Wireless 4G LTE network for streaming video, downloading files, uploading pictures and so much more, at consistently reliable fast data speeds,” said Verizon Wireless’ Chief Technical Officer Nicola Palmer.

Verizon is expanding its LTE rollout by giving the green light on May 17 for many northeast cities in the United States.

PC World tested 3G and 4G wireless data transfer speeds last month for the top four carriers —both indoors and outside with multiple devices across 13 major cities in 130 testing locations— and discovered some surprising results: AT&T won the 4G crown. It clocked the fastest speeds in all but four cities when compared to other 4G network providers. With that said, AT&T may soon lose its place as Verizon vastly continues to increase LTE presence in the country.